void combinar_c (
	unsigned char *src_a,
	unsigned char *src_b,
	unsigned char *dst,
	int m, //alto (cant filas)
	int n, //ancho (cant columnas)
	int row_size,
	float alpha
) {
	for (int j = 0; j<n; j+=1) { //columna
		for (int i = 0; i<m; i+=1) { //fila
			dst[i*row_size + j] = (alpha * (src_a[i*row_size + j] - src_b[i*row_size + j]) / 255) + src_b[i*row_size + j];
		}
	}
}
